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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Manager	Jaime Yorres	Germany	1 2 3 4 5
2	Marketing Manager	Jaime Yorres	Argentina	1 2 3 4 5
3	Marketing Assistant	Antonio Moreno	France	1 2 3 4 5
4	Marketing Manager	Howard Snyder	Argentina	1 2 3 4 5
5	Sales Manager	Matti Karttunen	Austria	1 2 3 4 5
6	Sales Agent	Paul Henriot	Bulgaria	1 2 3 4 5
7	Sales Manager	Elizabeth Lincoln	England	1 2 3 4 5
8	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
9	Marketing Assistant	Paul Henriot	Brazil	1 2 3 4 5
10	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
11	Sales Manager	Antonio Moreno	Germany	1 2 3 4 5
12	Sales Agent	Matti Karttunen	France	1 2 3 4 5
13	Sales Manager	Patricio Simpson	France	1 2 3 4 5
14	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
15	Owner	Patricio Simpson	Germany	1 2 3 4 5
16	Accounting Manager	Jaime Yorres	Germany	1 2 3 4 5
17	Sales Associate	Hanna Moos	England	1 2 3 4 5
18	Sales Consultant	Paul Henriot	Germany	1 2 3 4 5
19	Marketing Assistant	Matti Karttunen	Brazil	1 2 3 4 5
20	Accounting Manager	Hanna Moos	Austria	1 2 3 4 5
21	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
22	Accountant	Georg Pipps	Brazil	1 2 3 4 5
23	Sales Representative	Patricio Simpson	Brazil	1 2 3 4 5
24	Sales Consultant	Howard Snyder	Bulgaria	1 2 3 4 5
25	Marketing Assistant	Pascale Cartrain	Argentina	1 2 3 4 5
26	Sales Associate	Patricio Simpson	Italy	1 2 3 4 5
27	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
28	Sales Representative	Antonio Moreno	Germany	1 2 3 4 5
29	Accountant	Georg Pipps	Brazil	1 2 3 4 5
30	Sales Associate	Elizabeth Lincoln	Argentina	1 2 3 4 5
31	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
32	Sales Associate	Elizabeth Lincoln	England	1 2 3 4 5
33	Sales Representative	Hanna Moos	Spain	1 2 3 4 5
34	Sales Agent	Georg Pipps	USA	1 2 3 4 5
35	Accountant	Hanna Moos	France	1 2 3 4 5
36	Sales Agent	Elizabeth Lincoln	Austria	1 2 3 4 5
37	Accounting Manager	Pascale Cartrain	Brazil	1 2 3 4 5
38	Accountant	Georg Pipps	Austria	1 2 3 4 5
39	Sales Representative	Elizabeth Lincoln	Brazil	1 2 3 4 5
40	Sales Associate	Hanna Moos	England	1 2 3 4 5
41	Sales Manager	Georg Pipps	Italy	1 2 3 4 5
42	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
43	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
44	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
45	Marketing Manager	Howard Snyder	England	1 2 3 4 5
46	Sales Associate	Matti Karttunen	Italy	1 2 3 4 5
47	Accounting Manager	Paul Henriot	Brazil	1 2 3 4 5
48	Sales Consultant	Jaime Yorres	Argentina	1 2 3 4 5
49	Sales Agent	Howard Snyder	Bulgaria	1 2 3 4 5
50	Marketing Manager	Matti Karttunen	Argentina	1 2 3 4 5
51	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
52	Accounting Manager	Howard Snyder	Bulgaria	1 2 3 4 5
53	Sales Representative	Matti Karttunen	France	1 2 3 4 5
54	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
55	Sales Representative	Paul Henriot	England	1 2 3 4 5
56	Sales Agent	Georg Pipps	France	1 2 3 4 5
57	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
58	Sales Manager	Georg Pipps	France	1 2 3 4 5
59	Accountant	Howard Snyder	Germany	1 2 3 4 5
60	Sales Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
61	Marketing Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
62	Owner	Patricio Simpson	Germany	1 2 3 4 5
63	Accounting Manager	Georg Pipps	Brazil	1 2 3 4 5
64	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
65	Sales Consultant	Antonio Moreno	Spain	1 2 3 4 5
66	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
67	Marketing Manager	Antonio Moreno	USA	1 2 3 4 5
68	Sales Representative	Hanna Moos	Spain	1 2 3 4 5
69	Marketing Assistant	Matti Karttunen	Austria	1 2 3 4 5
70	Marketing Manager	Paul Henriot	France	1 2 3 4 5
71	Sales Manager	Howard Snyder	USA	1 2 3 4 5
72	Sales Associate	Elizabeth Lincoln	Germany	1 2 3 4 5
73	Accountant	Pascale Cartrain	Germany	1 2 3 4 5
74	Marketing Assistant	Elizabeth Lincoln	Italy	1 2 3 4 5
75	Owner	Jaime Yorres	Germany	1 2 3 4 5
76	Sales Agent	Hanna Moos	Spain	1 2 3 4 5
77	Sales Manager	Antonio Moreno	Austria	1 2 3 4 5
78	Sales Agent	Hanna Moos	Brazil	1 2 3 4 5
79	Sales Representative	Paul Henriot	Brazil	1 2 3 4 5
80	Sales Consultant	Antonio Moreno	Spain	1 2 3 4 5
81	Sales Consultant	Georg Pipps	Italy	1 2 3 4 5
82	Marketing Manager	Jaime Yorres	Argentina	1 2 3 4 5
83	Sales Manager	Matti Karttunen	France	1 2 3 4 5
84	Sales Representative	Jaime Yorres	France	1 2 3 4 5
85	Accounting Manager	Howard Snyder	USA	1 2 3 4 5
86	Marketing Manager	Hanna Moos	England	1 2 3 4 5
87	Owner	Jaime Yorres	France	1 2 3 4 5
88	Owner	Elizabeth Lincoln	England	1 2 3 4 5
89	Sales Representative	Matti Karttunen	Austria	1 2 3 4 5
90	Sales Consultant	Hanna Moos	Italy	1 2 3 4 5
91	Accountant	Patricio Simpson	Germany	1 2 3 4 5
92	Sales Associate	Howard Snyder	Brazil	1 2 3 4 5
93	Sales Manager	Antonio Moreno	Spain	1 2 3 4 5
94	Accountant	Pascale Cartrain	USA	1 2 3 4 5
95	Sales Consultant	Patricio Simpson	England	1 2 3 4 5
96	Sales Manager	Paul Henriot	Germany	1 2 3 4 5
97	Marketing Assistant	Howard Snyder	Germany	1 2 3 4 5
98	Sales Agent	Hanna Moos	Brazil	1 2 3 4 5
99	Sales Manager	Paul Henriot	Bulgaria	1 2 3 4 5
100	Accounting Manager	Matti Karttunen	Bulgaria	1 2 3 4 5


...241 242 243 244 245 246 247 248 249 250 ... Item 247001 to 248000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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